TIDA-050063: Limited power transfer capability

Hello Roberto,

Thanks for joining E2E and reaching out to our team! Could you please share your design requirements (voltage, capacitance, time) here?

Roberto del Pozo Gallardo said:

This will increase the frequency to +200kHz. That is not possible with the TPSI3052-Q1. Is it possible to use an optocoupler/digital isolator + a Isolated DC/DC converter?

And if yes what requirements does this Isolated DC/DC converter needs to have?

In the past, we have recommended using a flyback converter for higher power capability in place of TPSI3052-Q1. This article here goes into more depth and walks through a using a new calculator tool we have released to aid in your design process.

Best regards,
Tilden Chen

Solid State Relays | Applications Engineer

Hi Tilden,

The maximum voltage is 1000V capacitance 10mF and time 2s.

Hello Roberto,

Thanks for the update. Looks like your system would need 5-A average current, I imagine you were intending to use current thresholds of something like 4-A to 6-A. Understand the challenge, I'm not sure how to use the TPSI3052-Q1 here, take a look at the flyback converter. 

Best regards,
Tilden Chen

Solid State Relays | Applications Engineer

Hi Tilden,

I don't want to use the Low Voltage supply to charge the High Voltage capacitors.

Is there another options?

Hi Tilden,

Why do you recommend a fly-back converter and not for example a push-pull?

Hi Tilden,

I understand that the flyback converter just replaces the TPSI3052-Q1. I was only wondering why you propose a flyback converter and not a push pull converter for example?

How can I calculate the maximum possible frequency for a flyback converter for example?

Is it also possible to use a Isolated DC/DC coverter like this: SCWN03A-12